论文部分内容阅读
由长江水产研究所承担的“大鲵集约化养殖技术及其人工繁殖研究”课题已取得突破性进展。1987年从自然产区引进的大鲵在人工生态条件下,经过几年的养殖,摸索到大鲵的亲本培养技术和性腺成熟指标,并选择适当药物和剂量进行人工催产,催产率从1989年的♀28.6％和♂36.8％提高到1992年的♀65％和♂65.7％。人工授精技术进一步完善,1992年平均受精率30％,最高可达98％,平均孵化率达45％,获人工大鲵幼苗140余尾,并解决了幼鲵的开口饵料,幼鲵成活率达
Breakthroughs have been made in the topic of “Research on Intensive Aquaculture Technology and Artificial Reproduction” of the Yangtze River Fisheries Research Institute. In 1987, from the introduction of natural producing areas in the big raccoon in artificial ecological conditions, after several years of farming, to explore the raccoon of the parental culture techniques and gonadal maturity indicators, and select the appropriate drugs and doses for artificial labor, the oxytocin rate from 1989 的28.6% and 36.8% to ♀65% and ♂65.7% in 1992. Artificial insemination technology further improved in 1992, the average fertilization rate of 30%, up to 98%, the average hatching rate of 45%, artificial Taitou seedlings more than 140 tails, and solve the infant tilapia feed, the survival rate of juvenile